138957422 has 16 divisors (see below), whose sum is σ = 226663920. Its totient is φ = 63623808.

The previous prime is 138957409. The next prime is 138957433. The reversal of 138957422 is 224759831.

It is a self number, because there is not a number n which added to its sum of digits gives 138957422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53972 + ... + 56487.

It is an arithmetic number, because the mean of its divisors is an integer number (14166495).

Almost surely, 2^138957422 is an apocalyptic number.

138957422 is a deficient number, since it is larger than the sum of its proper divisors (87706498).

138957422 is a wasteful number, since it uses less digits than its factorization.

138957422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110515.

The product of its digits is 120960, while the sum is 41.

The square root of 138957422 is about 11788.0202748383. The cubic root of 138957422 is about 517.9572496435.

The spelling of 138957422 in words is "one hundred thirty-eight million, nine hundred fifty-seven thousand, four hundred twenty-two".